/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ClusterUnionManager.h
[FClusterUnionIndex](API\Runtime\Chaos\Chaos\FClusterUnionIndex) FindClusterUnionIndexFromParticle ( [FPBDRigidParticleHandle](API\Runtime\Chaos\Chaos\FPBDRigidParticleHandle) * Particle )